Worst-fit allocation is a memory management strategy that operating systems use to allocate memory resources to processes. It involves finding and allocating the largest available block of memory to the process in question. In other words, the worst-fit algorithm looks for the block of memory that is furthest in size from the requested size of the process. The aim of worst-fit allocation algorithm is to maximize memory fragmentation. It keeps the largest blocks available, which can be useful in situations where larger processes may be allocated in the future. However, it can result in inefficient memory utilization, as smaller blocks may not be fully utilized, leading to fragmentation.